An experimental setup for traceable measurement and calibration of liquid flow rates down to 5 nl/min.
Biomed Tech (Berl)
; 60(4): 337-45, 2015 Aug.
Article
en En
| MEDLINE
| ID: mdl-26154192
ABSTRACT
This work presents the improvements of an experimental setup for measuring ultra-low flow rates down to 5 nl/min. The system uses a telecentric CCD imaging system mounted on a high-precision, computer-controlled linear stage to track a moving liquid meniscus inside a glass capillary. Compared to the original setup, the lowest attainable expanded uncertainty at any flow rate has been reduced from 5.4% to 2%. In addition, the conformity with specification of three commercial micro-fluidic devices was evaluated using the new setup one syringe pump, one implantable infusion pump and one thermal flow sensor. The flow sensor and the implantable infusion pump met the compliance criteria (coverage probability 95%). The syringe pump however, failed to meet the specifications at 5 nl/min and 10 nl/min. No assessment could be made at higher flow rates.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Jeringas
/
Calibración
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Biomed Tech (Berl)
Año:
2015
Tipo del documento:
Article